| Sains-Morainvillers | |
| Commune Status: | Commune |
| Arrondissement: | Clermont |
| Canton: | Estrées-Saint-Denis |
| Insee: | 60564 |
| Postal Code: | 60420 |
| Mayor: | Xavier Matte[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Plateau Picard |
| Coordinates: | 49.5742°N 2.4714°W |
| Elevation M: | 116 |
| Elevation Min M: | 102 |
| Elevation Max M: | 143 |
| Area Km2: | 12.42 |
Sains-Morainvillers (pronounced as /fr/) is a commune in the Oise department in northern France.